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CVE-2026-34909

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the u

Published
Last modified
published
Listed in CISA KEV
Fix
Fixed in 5.0.8, 4.0.14, 5.1.12, 5.1.11, 5.1.10
None on Exploit-DB, Metasploit or GitHub

Summary

Ubiquiti UniFi OS devices are affected by a path traversal flaw that allows a attacker with network access to read files on the underlying system. Those files could potentially be used to gain access to an underlying user account.

Summarized by anthropic/claude-haiku-5.5. Verify details against the original sources.

Read the original description

A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to access an underlying account.

Timeline

  1. CVE published
  2. Added to CISA KEV

    CISA has evidence of exploitation in the wild

  3. Record last updated
  4. CISA remediation deadline

    Due date for US federal agencies to patch

  5. EPSS reached 10%

    FIRST estimates at least a 10% chance of exploitation in the next 30 days

Affected versions

  • Ubiquiti Inc UniFi OS Server

    fixed in 5.0.8

  • Ubiquiti Inc Express

    fixed in 4.0.14

  • Ubiquiti Inc UDM

    fixed in 5.1.12

  • Ubiquiti Inc UDM-Pro

    fixed in 5.1.12

  • Ubiquiti Inc UDM-SE

    fixed in 5.1.12

  • Ubiquiti Inc UDM-Pro-Max

    fixed in 5.1.12

  • Ubiquiti Inc UDM-Beast

    fixed in 5.1.11

  • Ubiquiti Inc EFG

    fixed in 5.1.12

  • Ubiquiti Inc UDW

    fixed in 5.1.12

  • Ubiquiti Inc UDR

    fixed in 5.1.12

  • Ubiquiti Inc UDR7

    fixed in 5.1.12

  • Ubiquiti Inc UDR-5G

    fixed in 5.1.12

  • Ubiquiti Inc Express 7

    fixed in 5.1.12

  • Ubiquiti Inc UNVR

    fixed in 5.1.12

  • Ubiquiti Inc UNVR-Pro

    fixed in 5.1.12

  • Ubiquiti Inc UNVR-Instant

    fixed in 5.1.12

  • Ubiquiti Inc UNVR-G2

    fixed in 5.1.12

  • Ubiquiti Inc UNVR-G2-Pro

    fixed in 5.1.12

  • Ubiquiti Inc ENVR

    fixed in 5.1.12

  • Ubiquiti Inc ENVR-Core

    fixed in 5.1.12

  • Ubiquiti Inc UNAS-2

    fixed in 5.1.10

  • Ubiquiti Inc UNAS-4

    fixed in 5.1.10

  • Ubiquiti Inc UNAS-Pro

    fixed in 5.1.10

  • Ubiquiti Inc UNAS-Pro-4

    fixed in 5.1.10

  • Ubiquiti Inc UNAS-Pro-8

    fixed in 5.1.10

  • Ubiquiti Inc UCKP

    fixed in 5.1.12

  • Ubiquiti Inc UCK

    fixed in 5.1.12

  • Ubiquiti Inc UCK-Enterprise

    fixed in 5.1.12

  • Ubiquiti Inc UCG-Ultra

    fixed in 5.1.12

  • Ubiquiti Inc UCG-Max

    fixed in 5.1.12

  • Ubiquiti Inc UCG-Fiber

    fixed in 5.1.12

  • Ubiquiti Inc UCG-Industrial

    fixed in 5.1.12

References 1

community.ui.com